212320151 has 2 divisors, whose sum is σ = 212320152. Its totient is φ = 212320150.

The previous prime is 212320127. The next prime is 212320159. The reversal of 212320151 is 151023212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212320151 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212320159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106160075 + 106160076.

It is an arithmetic number, because the mean of its divisors is an integer number (106160076).

Almost surely, 2^212320151 is an apocalyptic number.

212320151 is a deficient number, since it is larger than the sum of its proper divisors (1).

212320151 is an equidigital number, since it uses as much as digits as its factorization.

212320151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 212320151 is about 14571.2096615209. The cubic root of 212320151 is about 596.5731980481.

Adding to 212320151 its reverse (151023212), we get a palindrome (363343363).

The spelling of 212320151 in words is "two hundred twelve million, three hundred twenty thousand, one hundred fifty-one".